umm depends if your overclocking, but something like this should work. $150 isnt that much though....
http://www.performance-pcs.com/catal...ducts_id=22015 - $50. not the best, but still decent. GET 1/2" FITTINGS!!!
http://www.performance-pcs.com/catal...oducts_id=4087
- $64 ramsinks ftw :)
http://www.performance-pcs.com/catal...ducts_id=22697
- $60 goes over budget, but im trying my hardest not to.
http://www.performance-pcs.com/catal...cbce623e1a0a6\
- $30. get the 1/2" od fittings...please....
for tubing, go to hardware store and get some 1/2" id tubing please :) and go to a grocery store for some distilled water. this is way over budget but anything less and...well...it isnt going to happen. i dont recomend this system, but if you absolutely need to watercool for nothing this is it. get a cheapo 120mm fan also, and hopefully you just have one somewhere =/
hope it helps...
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now i remember